Which Chevy 305 v-8 has the most stock horsepower?

Answer 1

LE9 Years: 1981-1986 The LE9 5 L (305 cu in) was the truck/van version of the High Output 305. It also had flattop pistons for a 9.5:1 compression ratio, the "929" truck 350 camshaft for more torque, 14022601 casting heads featuring 1.84/1.50" valves and 53 cc chambers, a specially calibrated 4bbl Q-Jet, the hybrid centrifugal/vacuum advance distributor with ESC knock sensor setup, and lower restriction exhaust. The engine made 210 hp (157 kW) @ 4,600 and 250 lb·ft (339 N·m) @ 2,000 rpm. Added by Goofyfoot: Although I believe this quote from Wikipedia is incorrect on the LE9's hp b/c it was a detuned version of the H.O. carburated engine which was rated at 190 hp, it is academic since the LB9 TPI (tuned-port injection) had 215 hp and 275 lb·ft of torque (with a manual, the auto was rated lower. If memory serves me, it was 205 or 210 hp). It was optional in the 85-92 Chevrolet Camaro Z28 and RS and the Pontiac Trans Am, although certain years apparently had the lower ratings of the standard H.O. carburated engine (that's probably only with an auto trans). However, if you live in SoCal and plan on modifying the engine, there was an aftermarket kit available (I believe from Edelbrock) for the carburated H.O. engine which is C.A.R.B. approved and will allow you to pass the smog test w/o any problems. I don't know if it is still available. Again, if you are in SoCal, the LE9 truck engine would not be legal to swap into a car. There are various pieces for the TPI engines which are C.A.R.B. approved but not a kit engineered to work together. This is the reason people in SoCal tend to swap in later model LT1 and newer 350s. I don't know about the smog restrictions in other states.